Assembling-frame for steam-boilers.



No. 694,443. Patented llar. 4,1902. I

. 5. J. raunmaron.

ASSEMBLING F AME run STEAM BOILERS.

" (Application fllod June 10, 1901.)

(N6 Modgl.)

THE nor-ms versus co. inotaumd, WASHWGTOM n. cy

UNITED STATES PATENT OFFICE.

EDWARD J. PENNINGTON, OF LONDON, ENGLAND.

ASSEMBLlNG-FRAME FOR STEAM-BOILERS;

SPECIFlOATIONforming part of Letters Patent No. 694,413, dated March 4, 1902.

Application filed June 10 1901- To all whom it may concern:

Be it known that I, EDWARD J. PENNING- TON, a citizenof the UnitedStates, residing at London, England, have invented new and useful Improvements in Assembling-Frames for Use in the Building of Steam-Boilers, &c. of which thefollowing is a specification.

My invention consists of an assemblingframe to facilitate the building up of atubu lar boiler, condenser, or other structure, substantially as is described in my application, Serial No. 64,036, filed June 10, 1901.

In the accompanying drawings,Figure l is a perspective view of my improvement. Fig. 2 is an elevation, partly in section, illustrat ing the use of the invention.

Similar numerals of reference indicate similar parts in the respective figures.

I take aframe 1, made oi light metal, cylindrical in shape and of the required diameter and length-say, for illustration, five inches internal diameter by eighteen inches 'in length. At one end of this cylinder 1say about three-eighths inches inward from its edge-the internal diameter is reduced about one-eighth inch." This may be done by compression, hydraulically orotherwise, by spinning over in a lathe,or by swagin g. I then out two screw-threads 2 3, one at each end of the cylinder, by means of two taps, both mounted on one drill-spindle. The two taper taps have similar gage, and the threads'are cut simultaneously at both ends of the cylinder, though the thread 2 in the wall of the cylinder at the end where the internal diameter has been reduced one-eighth inch is of course smaller in diameter than the thread 3 at the other end, where the internal diameter of the cylinder still remains five inches. I then cut away a large portion ofthe walls of the cylinder, as shown at 4, sufficient material being left of the walls to keep the two ends firmly braced.

Into the ends of the cylinder 1 I now screw thejtwo heads'of my boiler,(constructed as described in my said application, Serial No. 64,036,) the outer periphery of each being threaded with a properly-pitched screw, so as to engage in the thread cut at that end of the cylinder which is of corresponding diameter to the particular head, one head being five inches diameter and the other four and seveneighths inches. The two heads 5 5 (see Fig. 2) are now in position, locked firmly in their Serial No. 64,033. (No model.)

places and at the exact distance apart at which they are later to be permanently fixed in the boiler-shell. I now proceed to pass from head to head through holes which have been previously made small tubes 6-say forty in numberof one-half inch diameter, and I fix the tubes in place by beading, spinning, or swaging over the ends which protrude through each head about one-eighth inch, so as to form a joint which will be watertight.

The object in view in cutting away the walls of the cylinder 1 on two sides, leaving only as much standing as will firmly brace the thread- 4 ed ends, will now be seen-viz., to enable the workman to more quickly and easily pass through and adjust the small tubes.

Instead of making the frame out of a cylinder two rings of slightly differing diameters, corresponding to thetwo ends ofthe cylinder described, and with screw-threads made to engage the respective heads, might be braced and held rigidly apart at the correct distance by three or four pillars. Having secured all the small tubes 6 to the heads 5, I now unlock these heads and tubes at one operation as [an entirety from the cylinder or frame 1 by unscrewing the heads, which can be done by holding them and the tubes in a vise and revolving and thus unscrewing the frame. The heads and tubes may then be withdrawn from that end of the frame which is of larger diameter and afterward inserted in the boiler-shell,which is of difiering diameter at its respective ends, is tapped with screwthreads, and in other necessary ways conforms to the temporary building or assembling frame in which the heads and tubes were first assembled.

I claim An assembling-frame for use in constructing tubular cylindrical boilers, condensers, or the like, consisting of an open frame combined with concentric cylindrical ends of different internal diameters, said heads being out with equally-pitched threads, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

EDWARD J. PENNINGTON.

Witnesses:

GEORGE H. HOWARD, ROBERT H. PATTERSON. 

